__________ are multiple copies of a short DNA sequence that occur at a given locus.
Fill in the blank(s) with the appropriate word(s).
Short tandem repeats
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The first chemicals that provided potential energy on Earth may have been formaldehyde and hydrogen cyanide. While these were produced by sunlight-driven reactions, they also occurred around deep-sea vents. If the first organisms on Earth evolved around
these vents, the first life on Earth was _____. A) photosynthetic, obtaining energy from the Sun B) chemosynthetic, obtaining energy from chemicals C) herbivorous, obtaining energy from plants D) carnivorous, obtaining energy from animals
Which of the following statements about medical asepsis is false?
A) Disinfection is a medical aseptic technique. B) Handwashing is a medical aseptic technique. C) Medical asepsis is considered a clean technique. D) The goal of medical asepsis is to exclude all microorganisms from an area.
In the illustration, which group is the least inclusive?
a. Canis familiaris b. Animalia c. Chordata d. Mammalia e. Canidae
A change in gene frequency within a population over time is called
Fill in the blank(s) with the appropriate word(s)